Arthur Hastings. Usually referred to as 'Captain Hastings' or 'Hastings'.
Hercule Poirot's middle name is not officially disclosed in Agatha Christie's novels.
Captain Hastings
Megaera
Hercule Poirot is pronounced as "er-kool pwah-roe."
"The Belgian Detective"
Steve's last name is Leonard, but his best friend, Darren Shan, calls him Steve "Leopard."
Hercule Poirot
Hercule Poirot's wife was Vera Rossakoff, a Russian opera singer whom he met during a case in Russia. Their relationship is mentioned in Agatha Christie's novel "The Big Four."
Albert Finney was nominated for the Oscar as Best Actor for his role as Hercule Poirot in Murder on the Orient Express(1974).
There is no book called "Hercule Poirot". Agatha Christie wrote thirty-four novels and sundry stories featuring Poirot, but none of them has that name.
Poirot lives in Whitehaven Mansions.
In Agatha Christie's novels and short stories, Hercule Poirot is aided or accompanied during his investigations by a number of characters. These characters include: Captain Arthur Hastings, Colonel Race, Monsieur Bouc and Ariadne Oliver.